GB 1840 SGME4 Cover 1840 2d Mulready Envelope (Forme 1, Stereo a208). Very fine late usage example sent within London cancelled by a London W.C. squared circle for MR.11.1886. Initially deemed invalid for postage by the postal clerk and stamped with a hand struck "2" this then cancelled with an inspectors erasure mark, the cover additionally endorsed at lower left "Charged in error. The stamp Envelope being genuine. F.H. Postmaster W.C. District". A lovely late usage mulready. Ex. Shaida.